Water reservoir for cooking stoves



Jan. 29, 1946. w. PQ BIDDLE. JR

WATER RESERVOIR FOR COOKING. STOVES Filed May 15, 1943 Patented Jan. 29, 1946 UNIT-ED PATENT OFFICE wArEcnnsEamm R, COOK NG srov s wimamn-BmmeJn. K o yi "'1 nn-, ssi s! *tosandebcnd fatents, 111e,, Knoxville, Tenn, a

*corporationof'Delaware r I Am lication; 1943, Serial No. ;48fi-,866--;

' 1 Claim; (craze-34) water reservoir has sbeenrito incorpona te 1211?: ithi the stove at :one; end thereof; .ItqhBjS; beenzp f ir posedalsoto. provide:.a reservoir ate-the rear ;of

the top ;of'the..stove,..but in suchila-tter ,sugges tions, the usual procedure has :beento construct the stove pipe as an ,-.independentelement ;se p a-;- rate: from the wall of the:wvaterwresenvoirrwhich must receive-its heat from:theproducts:,of'scomr bustion in :the stove; Inrsome instances, the stove pipe has been counter-sunk zinz-the;floackyofythe stove, and in other instances-ran air a'spaceris provided between itheavalli of: the. smoke gpipe adjacent to the water reservoir :andethecontigllous: surface ofithe water reservoir-szwhiche-i's to obtain its heat from the productsz'ofccombustion. These variousdesignsare expensive in construction, use additional material that should not be required, and are not efficient in the heating of the water in the reservoir.

The principal objects of this invention are: first, to reduce the cost of the construction of the reservoir for heating water on an ordinary range; second, to increase the efficiency of the transfer of heat from the products of combustion to the water reservoir; third, to avoid substantially increasing the depth of the stove rearber as one integral construction having a single thickness wall separating the smoke pipe from the water reservoir, and with the reservoir located immediately beside the smoke pipe and of substantially equal depth therewith, all built in a substantially flat rectangular chamber located immediately at the back of the stove. By this construction, using a wall common to the smoke pipe and water reservoir, a substantial saving of material is effected by reducing to a minimum the thickness of the metal between the smoke pipe and water reservoir, thereby obtaining a maximum transfer of heat from the products of combustion in the smoke pipe to the water in the reservoir. There is no air gap present nor other means that would provide substantial insulation therebetween. This construction, ;;is provided counter-sinking the stove; pipein the back; of the stove top or otherwise,--;and itlocates the,. back upright wall of; the watenreservoir:substantially in line with the backupright wall ;of;,the smoke pipe itself. All of- -thiseffectssimplicity ofdesign, reducing the cost to a minimum, whilaaccom; plish-inga most efiicient heating of the water,

A preferred embodiment-of the-.inventionis shown in the accompanying drawing in which z Fig. --1 is atop plan view-eta cookingstove hay ing this improved water reservoir appliedthereto;

Fig. 2 is an end elevation thereof; and

3 is a -,rear elevation thereof,- parts-being broken away and in section.

The invention is shown 'as applied. ,to' a cooking stove of well-known commercial form-designated generally by the numeral I, being of thetype known as coal or Wood-burningrange, This stove has a fire box atzone 'end thereof,.as.indicated at 2, from which .theproducts .of 'combuse tion circulate underthecooking-top pitherange and are discharged through a smoke outlet '3 .at the back thereof below the top of the range.

The water reservoir construction is shown as an attachment mounted at the back of the range, flat against the rear wall thereof. This structure includes both a water reservoir 4 and a smoke pipe or heat dissipating chamber 5, located in side-by-side relation. These chambers 4 and 5 are enclosed within front and back walls 6 and I, respectively, and end walls 8 and 9, and a bottom Ill. The walls 6-H] are preferably constructed of sheet metal, relatively thin, and fashioned in a substantially flat integral structure, by welding or otherwise securing the sides and bottom together through liquid and air tight seams in one enclosed structure. This structure is divided lengthwise by a vertical partition ll, of single sheet metal thickness, integrally secured by welding or otherwise at its opposite edges to the faces of the walls 6 and 1. The partition ll separates the structure into the chambers 4 and 5, and cooperates'with the wall structure to form the water reservoir and the smoke pipe or chamber. The top of the reservoir structure is provided with a door opening I2, normally adapted to be closed by a removable cover, while the top of the smoke pipe 5 has a smoke pipe ring 13 adapted to receive the conventional smoke pipe.

The forward wall 6 of the reservoir structure is shown as having an opening therein, at or near the bottom of the smoke pipe 5, to interfit' with the flange surrounding the smoke outlet 3 2 r r f 7 2,893,881 V r V 7 At the same time, the simplifieddesign and relatively flat rectangular shape of the reservoir of the stove, so as to suppcrtone end of the water reservoirstructure th ereon,'the opposite end be- 7 'ing seated upon a bracket I4 secured to the rear wall of the range I. If the reservoir structure is raised slightly-above the smoke outlet 3, the in- 5 let opening'for the pipe 5, may be provided directly in the bottom of the latter.

of the smoke" pipe chamber and formed in one l5 integral structure therewith, whereby the walls would extend continuously to both opposite sides H of the smoke pipe, and be separated bytwo -par- Vtitions into two'water reservoirs with-a single I smoke pipetherebetween. In that event, the subh V r I claim:'" i

stantially rectangular box at the back of the-stove is divided into three substantially'frectangular sections, one of which provide la substantially rectangular portion through which the smoke 7 passes from the back of the stove tothe conventional circularstove pipe'attached at the top of the rectangle to convey, the gases of combustion rtothechimneyi f V It willrbe'evident that the smoke willlb'e dis- 7 charged from the stove through the-smoke out let '3; directly into the lower end of- 'the smoke 1 pipe 5,- through' which the smoke would passup wardly to the conventional smoke-pipe'surmou'nted thereon at the ring; l3. In passing-through the smoke pipe 5, theproducts of combustion would radiateheat through the single partition I i separating this smoke chamber irein the' wa-' ter reservoir 4, w hi'chgis thin and'accomplishes an effective heat transfer from the' 'products of l combustion tothe Water in the reservoir. This 4 will be entirelysufficient t'o'h'eat theiwater in the reservoirto the desired temperature as has been 'cial nstru ldemonstrated by actual testand 'use ih commer- 0. of the cooking structure and havin structure, disposes the water reservoir chamber at the rear of the stove flat against the back wall thereof where it requires no additional space over that necessary for the smoke pipe at the back of the stove, since the reservoir is built of thesame depth from :iront to back as the smoke pipe it- 'self andlhavingits back wallsubstantially in transverse alignment with the back uprightwall t the smoke pipe. This simplicity of construction-reduces the cost of manufacture to a minimum and yet 'is'highly eflicient in providing a water-reservoir which does not require modification-ofthe-stove-structure Its commercial manufagture has demonstrated that it fulfills the requirements, inasmuch as it hasmet with great 'favor in thitradep At the same time it can be sold at a lower price than conventional designs 7 of water reservoirs. V

" In a, eooking stove, the combination with'a cooking structure having a fire box therein with a smoke outlet through the'back wall of said cooking structure, of a water'reservoir comprise ing an elongated relatively fiat enclosed :onepiece structure, said reservoir structure having enclosing sides extendingcontinuously from end to 'endof said reservoir structure,v endwalls and bottom, and'being of uniform width from end to-end of said reservoir structure; and a parti-i tion formed of a single sheet of heat conducting 7 material extending between the opposite sides and rigidly secured to said sides adjacent'an end or said structure and separating said structure into water and smoke chambers in heat conducting relation through said partition, said smoke chamber having an openingtherein adjacent the bottom thereof registering with the'smoke outlet letatthe top thereof."

r V o "WILLIAMR'BIDDLRJB.

g a smoke out-V 

